An incredible resource with an extremely large amount of data, worldwide. Great for researching species or other taxon, to see photos and observations, geographical range, and a lot more. One of my go-to research tools. One word of caution: GBIF automatically pulls photos from iNaturalist, and since many iNaturalist users are not professionals, their proposed identifications can be incorrect. This means that sometimes you’ll see photos on GBIF which are not the species you’re researching. GBIF is still a great resource, but approach the images section with the aforementioned fact in mind.